Something is happening to our big green and blue Earth! Pollution is making it hard for plants to grow, for animals to play, and for oceans to stay clean. But what can anyone do about it? On a yucky, smoggy day, a box of seven special crayons steps up to help! These peppy crayons are on another adventure to bring friendship, teamwork, and thoughtfulness to the world—but this time, it’s the world that needs help. With their unique personalities, quirky attitudes, and stick-to-itiveness, this rainbow of friends puts their heads and hearts together to find a way to save the Earth.